On it's way.
Couldn't get the trigger_changetarget to work, so I used a 2 beams and a multi-manager instead. I used env_beams instead of env_lasers because they're more flexable. Map starts with laser1 on, a nice peaceful laser behind glass. "Sombody" sees a crowbar on the floor and smashes glass the glass, which triggers the multimanager laser_mm, which is set to trigger laser1 and laser2 in .001 seconds (for some reason zero can cause problems). Since the lasers are set to toggle, laser1 turns off and laser2 starts randomly popping away at the info_targets. I played it with damage set to 1000 just to make life interesting... and short!
too much free time